Alvarion BreezeMAX Si 4000 CPE User Manual page 65

Chapter 4 - Configuring Setup Parameters Setting Device Time Zone
Auto Adjust for Daylight Saving Time - Select this check-box to set the
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daylight saving time if the unit operates in a region that observes daylight
saving time. The default is Enabled.
BreezeMAX Si 4000 CPE 49 User Manual